Author:
Tiwari Raghvendra,Singh Ravindra Kumar,Choudhary Niraj Kumar
Abstract
The operating time of directional overcurrent relays (DOCRs) can be reduced with user-defined relay characteristics considering plug setting (PS), time multiplier setting (TMS), and relay characteristic coefficients (λ and γ). This study presents a comparative analysis of relay coordination with standard and user-defined relay characteristics. The proposed relay coordination scheme is formulated as a non-linear constraint optimization problem. The grey wolf optimization (GWO) algorithm is used to determine the optimal relay settings and total operating time of DOCRs. The performance of the proposed scheme is tested on the standard 8-bus, 9-bus, and 15-bus systems. The results show that the total operating time of DOCRs with user-defined relay characteristics is better than that with standard relay characteristics. The results of the GWO algorithm are compared with the performance of optimization techniques used in literature to solve the relay coordination problem.
Publisher
Taiwan Association of Engineering and Technology Innovation
Subject
Electrical and Electronic Engineering,Mechanical Engineering,Mechanics of Materials,Civil and Structural Engineering
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1. Comparative analysis of directional overcurrent relay coordination using linear and nonlinear protection schemes;2023 International Conference on Computer, Electronics & Electrical Engineering & their Applications (IC2E3);2023-06-08